Messages in this thread Patch in this message | | | From | Arkadiusz Miskiewicz <> | Subject | Re: Finalized FPU Crash Fix? [2.2.x] | Date | Thu, 17 Jun 2004 18:55:28 +0200 |
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On Thursday 17 of June 2004 18:08, Josh Myer wrote: > Hello everybody, > > Is there a general concensus that the one-liner in 2.6.7 is an > appropriate fix for the FPU hang/crash bug? I have several machines > running 2.4.x which require that outside people have shell access. > Needless to say, I'm somewhat nervous about this problem =) And how this look in 2.2.x kernels? One guy here tells me that after running http://linuxreviews.org/news/2004-06-11_kernel_crash/index.html#toc1the 2.2 kernel freezes.
Is such fix right one? 2.2.x doesn't crash with it.
Index: SOURCES/kernel-fwait-2.2.patch diff -u /dev/null SOURCES/kernel-fwait-2.2.patch:1.1 --- /dev/null Thu Jun 17 15:34:42 2004 +++ SOURCES/kernel-fwait-2.2.patch Thu Jun 17 15:34:36 2004 @@ -0,0 +1,10 @@ +--- linux-2.2.26/include/asm-i386/processor.h~ Thu Jun 17 17:19:57 2004 ++++ linux-2.2.26/include/asm-i386/processor.h Thu Jun 17 17:32:36 2004 +@@ -426,6 +426,7 @@ + + #define clear_fpu(tsk) do { \ + if (tsk->flags & PF_USEDFPU) { \ ++ asm volatile("fnclex ; fwait"); \ + tsk->flags &= ~PF_USEDFPU; \ + stts(); \ + } \ -- Arkadiusz Miśkiewicz CS at FoE, Wroclaw University of Technology arekm.pld-linux.org, 1024/3DB19BBD, JID: arekm.jabber.org, PLD/Linux - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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